Liquid-dispensing apparatus



March 26, 1929. w. G. O'BRIEN 1,706,631-

LIQUID DI SPENSING APPARATUS Filed April 26, 1928 Ill 36 mum.

mu m

Patented Mar. 26, 1929.

UNITED STATES 1,706,631 PATENT; OFF-ICE.

WILFRED GAOBRIEN, OF BOSTON, MASSACHUSETTS, ASSIGN'OR OF TWO-THIBDS TOANGELO BERLANDI AND STEPHEN ZUBRACKA, BOTH OF BOSTON, MASSACHUSETTS.

LIQUID-DISPENSING APPARATUS.

Application filed April 26, 1928. Serial No. 272,908.

This invention relates to certain improvements in liquid dispensingdevices which are I designed to deliver a measured quantity of liquidwhen operated and are primarily designed for use in connection withsuitable coin-controlled mechanism.

The object of my invention is to provide an improved form of liquiddispensing mechanism of the character above referred to which willrapidly deliver a predetermined quantity of liquid when operated andwhich cannot be operated in a manner to deliver more than such quantity.

I accomplish these objects by means of the construction hereinafterdescribed and as illustrated in the accompanyingcdrawings in which Fig.1 is a view partly in front elevation and partly in vertical centralsection illustrating" a preferred form of apparatus embodying theinvention.

Fig. 2 is a plan view thereof.

According to my invention I provide a suitable reservoir 1 which isconnected by pipe 2 to a valve casing 3 thru a port 4. A piston valve 5is slidably fitted to casing 3, and connected by its stem 6 to an arm 7of a rock shaft 8, the connection between the stem and arm being slottedto permit the necessary side play therebetween when the arm is swung upor down. The lower end of the casing 33 is connected by a pipe 9 to thelower end of a measuring ehan'iber 10, said chamber having a cover 11vfor tightly closing the same and said cover having two vent holes 12 and13 therein. A float lever 14 is mounted on a pivot 15 within chamber 10and a valve 16 is connected to said lever and arranged to close vent 12when the li uid in chamber 10 rises to a predetermined evel. A valve 17is mounted for vertical movement ,on top of cover 11 in a suitableguiding bracket 18 in position to close vent 13 when it is forceddownward by a spring 19 on the stem thereof. A lever 20 is connected tothe stem of valve 17 in position to lift the latter from its seat whenswung upward. A discharge pipe 21 is also connected to the chamber 10 atone end and at the opposite end is connected to a valve casing 22 thru aort 23. A cylindrical valve 24 is slidably tted to casing 22 and isarranged to close ort 23 and to seat at its lower end on a va ve seat 25arranged in a discharge pipe 26 with leads from the lower end of casing22. A stem 27 is provided for the valve 24 and-is connected at its upperend to an arm 28 mounted on rock shaft 8 in oppositely disposed relationto the arm 7, the pin and slot connection between said stem 27 and arm28 permitting the necessary side play therebetween when the shaft 8 isrocked by its handle 29 or other suitable means. A pin 30 is mounted onstem 27 in position to engage lever 20 and liftthe same to open valve 17when valve 24 is moved upward.

It will be understood that in practice means will be provided forlocking rock shaft 8, so that a single complete oscillation only,thereof, will be permitted on the insertion Of a coin, but that for thepurposes of thepresent invention it is not necessary-todetion somemeans, as spring 31 on stem 6, will also be provided which will normallyact to hold the valve 5 open and the valve 24 closed, the normalposition of the parts being the opposite position from that shown inFi 1. w

in operation, therefore, it may be consid ered that in the normalposition of the apparatus, the valve 24 will be seated against seat 25',closing port 23 and that va1ve 5 will be raisedto a position inwhich itslower end is at the level of the top edge of port 4.

Under these conditions or. when the parts are moved to this position,liquid in reservoir 1 will flow thru pipe 9 up into chamber 10. When theparts are in this position and the chamber is empty the valve 17 will beclosed, and the float on lever 14; will be lowered, holding valve 16open, so that, as the liquid flows into chamber 10, the air therein willescape thru vent 12 until the chamber has been filled to the desiredlevel and then the float will be lifted sufficiently to close valve16,so that 1 further escape of air from the chamber is prevented andfurther flow of liquid therein is also prevented except asmay bepermitted by the compression of the air therein.

If then the shaft 8 is rocked and the parts moved to the position shownin Fig. 1, during the first portion of the movement the valve 5 will belowered so as to close the port- 4 before the valve 24 is'raisedsufficiently to open port 23. On further movement of the parts, thevalve 5 will be merely moved to a lower position and the valve 24 willbe raised so as to open port 23 and permit discharge of the liquid inthe chamber thru the delivery pipe'26 into a receptacle, as m, whichWill be placed in osition to receive the same. Also during the atterportion of this movement the pin will engage lever 20, lifting valve 17from its seat and permitting air to pass thru vent 13 into the chamber,so that the liquid therein will be quickly discharged. As the floatlever moves downward the vent 12 will also be opened permitting theentrance of additional air. As a result the contents of chamber 10 willbe quickly delivered.

On the return movement of the parts the valves 24! and 5 will operate inreverse order, port 23 being fully closed before port 4 is opened at alland vent, 13 being also closed,

that the'chambe' 0 will refilled as be 1 described.

I claim:

A liquid dispensing apparatus comprising a measuring chamber, an inletvalve and a discharge valve for controlling the supply to, and dischargefrom said chamber, operating means for said valves arranged, whenvmovedin one direction, successively to close said inlet valve and open saidoutlet valve, and in the opposite direction to close: said outlet valveand open said inlet valve, float 0per-- said discharge valve is moved toopen position.

In testimony whereof, I have signed my name to this specification. v

WILFRED G. O BRIEN.

